iPhone 4 owners who are wanting Siri on their devices will be tempted by a new jailbreak hack. H1Siri, created by Chinese hackers, is a full port of the assistant. The tweak is available in Cydia, but as there are several big problems we would advise you to stay away.

There is no legal way to port Siri to a non-iPhone 4S device. Apple requires an iPhone 4S’s live ID token to validate the service. Those who do port the token will need to continuously port it, as it expires every couple of days. The tokens can’t be mass distributed, as one identifier being accessed by thousands of devices would alert Apple. It’s also just as illegal as a pirated video game.

How does H1Siri do it? It probably uses Siri Proxy, a work-around that fools the assistant into communicating with a proxy server instead of Apple. H1Siri users report that the app has only been working intermittently. This could be the result of a remote Siri proxy that was unprepared for thousands of eager Cydia users.

Testers of the app say that when the servers are responding, it is indeed a fully functional port of Siri. Unlike the Siri dictation hack that showed up last week, this is the whole nine yards: assistant and dictation.

If being illegal and unresponsive isn’t enough, H1Siri could potentially be mining your data. This is speculation, but the app is from unknown developers and an unknown repo. Anything you say to Siri will be routed through these unknown entities’ servers. Do you trust them?

Those living on the edge can find our instructions below. Proceed if you wish, but it isn’t likely worth it: